![]() These chimneys often show vertical cracks on the exterior. Fundamental design flaws bankrupted the US manufacturers and made the design obsolete. Masonry (brick or stone fireplaces and chimneys) with or without tile-lined flue.They are completely sealed from the area that is heated, and vent all exhaust gasses to the exterior of the structure. Direct vent fireplaces are fueled by either liquid propane or natural gas. There are also air quality control issues due to the amount of moisture they release into the room air, and oxygen sensor and carbon monoxide sensors are safety essentials. They must be properly sized to the area to be heated. In the United States, some states and local counties have laws restricting these types of fireplaces. Ventless Fireplaces (duct free/room-venting fireplaces) are fueled by either gel, liquid propane, bottled gas or natural gas. Masonry and prefabricated fireplaces can be fueled by wood, natural gas, biomass and propane fuel sources. A few types are, wall mounted electric fireplaces, electric fireplace stoves, electric mantel fireplaces and fixed or free standing electric fireplaces.Electric fireplaces can be built-in replacements for wood or gas or retrofit with log inserts or electric fireboxes.Manufactured fireplaces are made with sheet metal or glass fire boxes. ![]() The EPA writes " Smoke may smell good, but it's not good for you." Organizations like the Environmental Protection Agency and the Washington Department of Ecology warn that, according to various studies, fireplaces can pose a significant health risk. (May 2008) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. The EPA writes "Smoke may smell good, but it's not good for you." Some chimneys have a spark arrestor incorporated into the crown or cap. A cap, hood, or shroud serves to keep rainwater out of the exterior of the chimney rain in the chimney is a much greater problem in chimneys lined with impervious flue tiles or metal liners than with the traditional masonry chimney, which soaks up all but the most violent rain. On the exterior there is often a corbeled brick crown, in which the projecting courses of brick act as a drip course to keep rainwater from running down the exterior walls. A fireplace may have the following: a foundation, a hearth, a firebox, a mantelpiece a chimney crane (used in kitchen and laundry fireplaces), a grate, a lintel, a lintel bar,home overmantel, a damper, a smoke chamber, a throat, and a flue. A fire is contained in a firebox or firepit a chimney or other flue allows exhaust to escape. Historically they were used for heating a dwelling, cooking, and heating water for laundry and domestic uses. Modern fireplaces vary in heat efficiency, depending on the design. ![]() Fireplaces are used for the relaxing ambiance they create and for heating a room. ![]() A fireplace is a structure made of brick, stone or metal designed to contain a fire.
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